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Inconel exhaust valves

Old 03-28-2007 | 11:08 AM
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Default Inconel exhaust valves

Is there any difference in the appearance of an Inconel valve compared to a Stainless? How do you know if you have them or not?

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Frank
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Old 03-28-2007 | 05:33 PM
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Inconel is much more durable than stainless and is best for exhaust valves. My understanding is they are composed of iron and nickel ... perhaps they would be magnetic?

Should be some kind of marking or numbers on the valve stem?
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Old 03-28-2007 | 06:41 PM
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Originally Posted by RedDog382
Inconel is much more durable than stainless and is best for exhaust valves. My understanding is they are composed of iron and nickel ... perhaps they would be magnetic?

Should be some kind of marking or numbers on the valve stem?

Inconel 625(non-hardenable) and 718(hardenable) are not magnetic.
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Old 03-28-2007 | 06:43 PM
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Inconel steel is heavier than stainless,
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Old 03-28-2007 | 08:12 PM
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Originally Posted by H2Xmark
Inconel steel is heavier than stainless,

Hey Frank, Put a tourch on and see how much heat it takes.
Don't you like a wise azz?
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Old 03-29-2007 | 09:06 PM
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I was told by someone at Manley that a magnet should stick to the valve stem 1/2 way up if it's inconel.
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Old 03-30-2007 | 07:08 AM
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Originally Posted by KAAMASCARAB
I was told by someone at Manley that a magnet should stick to the valve stem 1/2 way up if it's inconel.
He already did that. It stuck. Didn't stick on the valve.
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Old 03-30-2007 | 10:49 AM
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Well, the heads are already assembled, but it didn't stick to the valve side, but it did to the stem side. Only problem is, the the stainless intake valve did the same thing. I guess I'm going to have to trust AFR that they are in there.

Frank
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Old 04-01-2007 | 11:25 AM
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What year is your nova? I have a chassied '62.
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Old 04-01-2007 | 11:39 AM
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It's a 64. Here are some pix of it. http://www.cardomain.com/ride/527714

What's in your 62? Post up a pic.

Frank
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